When tertiaryamines 1 are reacted with perfluoro cis-2,3-dialkyloxaziridines 2 at −60°C corresponding N-oxides 3 are formed in high yields. The process is chemoselective and diastereoselective. The chemoselectivity in the reaction of alkenyl substituted pyridines is solvent dependent, attack occurring exclusively at the carbon-carbon double bond or at the nitrogen atom under protic and aprotic conditions
Ligand-controlled NiH-catalyzed regiodivergent hydroalkylation of 2-alkenylazaarenes
作者:Ya-Ping Shao、Zhuo-Min Chi、Yong-Min Liang
DOI:10.1007/s11426-024-1949-1
日期:2024.6
azaarenes with alkyl iodines has been established through strategic modulation of N- or P-donor ligands. This method enables the synthesis of diverse β- or γ-branched aromatic N-heterocycles. The mild regiodivergent protocols exhibit wide substrate scope, excellent functional tolerance, and great reaction yield with remarkable regioselectivity. Importantly, deuterium labeling studies reveal NiH-catalyzed
On treatment with perfluoro-cis-2,3-dialkyloxaziridines, mono-, bi-, and tricyclic nitrogen heteroaromatics afford the corresponding N-oxides under mild reaction conditions and in medium to high yields. The course of the reaction is not altered by the presence of various residues on the ring or in side chains and the N-oxides of polyfunctional, naturally occurring compounds have been prepared.
Synthesis and antitumor activity of platinum complexes containing neutral and protonated amino-olefin ligands
作者:David B. Brown、Abdul R. Khokhar、Miles P. Hacker、John J. McCormack、Wayne M. Stalick